Parent child swim class-what kind of swim suit does mom wear?

I'm going to sign up LO for swim lessons at the local YMCA and its a parent child swim class school which is great but I have no idea what to wear to that. What kind of bathing suit do you wear? All I have are Victoria Secrect bikinis which are not going to be good for this. Do you wear a one piece? A speedo? LO tends to pull at whatever I'm wearing so it'll have to be something sturdy. LO is ready to learn to swim but momma is NOT ready for a bathing suit.

When I was doing my prenatal classes they did mommy and me classes at the same time at the Y. I saw everything from bikini to one piece. I thought all were appropriate. I was a little jealous if those in bikinis looking hot. Not going to lie. Lol

Some ymcas have rules about bikinis or thickness of bathing suit straps.... I wear a one piece - just go to Ross or Marshall's and pick out a cheap bathing suit. It will get ruined from the chlorine anyways

Tankinis are great. That's what I wear. I'm tall so finding a one piece is ridiculous. I took ODS to swimming lessons and most moms had tankinis or one pieces. Didn't see any bikinis -- but I think lost of us have post baby bellies to hide. Lol.